Saw device using different colors or identifiers to distinguish the front and back of the package
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 24, 2005
Grant Date -
May 29, 2003
app pub date -
May 1, 2001
filing date -
Jun 26, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A surface acoustic wave device applied to a filter, an oscillator, a delay element, or the like has at least a surface acoustic wave element with metal electrodes formed on a piezoelectric substrate to excite surface acoustic waves, a plastic casing base to accommodate the surface acoustic wave element inside a casing, and a plastic cap to seal a hollow in the casing. If the plastic casing base and plastic cap have the same material color, there will be a high risk of misjudging the front and back faces of a plastic package. Providing the plastic casing base and plastic cap with different material colors may reduce inserting direction errors when inserting the surface acoustic wave device into, for example, a printed board.
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